Malicious PDF — malware analysis report

Static analysis result for SHA-256 4030119323400e1d…

MALICIOUS

PDF

64.1 KB Created: 2020-12-02 23:45:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 2515d97abdce90b8b2dac6b0742edfc7 SHA-1: d1f802649b572619017b3daf02236a6d1d804253 SHA-256: 4030119323400e1de865714d6c2630b356a45edbe362ddcdecc1e3981ca6cc9f
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The presence of embedded URLs and the overall structure indicate an attempt to redirect users to malicious or deceptive websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://trafffi.ru/aws?utm_term=always+awake+android PDF link annotation
    • https://xinomufe.weebly.com/uploads/1/3/4/7/134706409/2667e.pdfIn PDF document text
    • https://lesuwigiwojan.weebly.com/uploads/1/3/4/3/134309114/munenisemerarogaki.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448746/normal_5fbae363f1616.pdfIn PDF document text
    • https://bimotozego.weebly.com/uploads/1/3/4/8/134885309/wipogur.pdfIn PDF document text
    • https://tilinonulubun.weebly.com/uploads/1/3/4/6/134614078/boxebogijakexalugo.pdfIn PDF document text
    • https://woniwisupu.weebly.com/uploads/1/3/4/2/134266019/3155370.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370985/normal_5f904eaba76ad.pdfIn PDF document text
    • https://dinomorozowi.weebly.com/uploads/1/3/4/6/134610364/2016990.pdfIn PDF document text
    • https://ziripovopibew.weebly.com/uploads/1/3/0/8/130874468/tezabuliwuzet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409256/normal_5fa2c59e84273.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rexogeguxosix/24129051010.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c014.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC014 5068 bytes
SHA-256: 9fe48101a1b730979c420ef5f8f4c11ba2193ea08fda1a66a57fce304a0e8a5b
font_01_sfnt_off0000d176.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD176 10148 bytes
SHA-256: e42e944da54fa108ab6653db1e6958b29c6f9aa949b86e9d519f105e4c4bd362

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